LDH Nanoflower Lantern Derived from ZIF-67 and Its Application for Adsorptive Removal of Organics from Water

Wang, Qian; Xiaofei, Wang; Shi, Chunlei

doi:10.1021/acs.iecr.8b01324

Cited by 51 publications

(20 citation statements)

References 32 publications

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“…This reveals the (Figure 4d) shows two major peaks at 875.1 and 851.6 eV ascribed to Ni 2p 1/2 and Ni 2p 3/2 with two additional satellites (indicated as "Sat."). [32] Similar results for N-ZIF-(1:0)@NiCo-LDH and N-ZIF-(1:3.5)@NiCo-LDH are shown in Figure S2.…”

Section: Characterization Of Compositessupporting

confidence: 78%

Hollow N‐ZIFs@NiCo‐LDH as highly efficient catalysts for 4‐nitrophenol and dyes

Lin

Duan

Zhao

2020

Applied Organom Chemis

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N‐ZIF‐(1:0)@NiCo‐LDH, N‐ZIF‐(1:3.5)@NiCo‐LDH and N‐ZIF‐(0:1)@NiCo‐LDH were prepared by mixing solvents in various volume ratios (Vmethanol:Vwater = 1:0, 1:3.5 and 0:1) when synthesizing precursors. These composite materials were characterized using scanning and transmission electron microscopies, X‐ray diffraction, X‐ray photoelectron spectroscopy and nitrogen adsorption–desorption measurements, and investigated as catalysts for reduction of 4‐nitrophenol, methyl orange and methylene blue. The NaBH4 concentration as an important factor that may affect catalytic activity for reduction of 4‐nitrophenol was examined. Under optimal experimental conditions, the excellent catalytic activity of the N‐ZIF‐(0:1)@NiCo‐LDH composite, compared to that of N‐ZIF‐(1:0)@NiCo‐LDH and N‐ZIF‐(1:3.5)@NiCo‐LDH composites, could be attributed to the presence of graphitic nitrogen. In addition, compared with previously reported catalysts, all catalysts prepared show excellent catalytic activity owing to the unique structure exposing more active sites.

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Section: Characterization Of Compositessupporting

confidence: 78%

Hollow N‐ZIFs@NiCo‐LDH as highly efficient catalysts for 4‐nitrophenol and dyes

Lin

Duan

Zhao

2020

Applied Organom Chemis

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“…Figure 1a presents X-ray diffraction (XRD) pattern of HCo@NC, and the embeded is the XRD pattern of ZIF-67. As shown in Figure 1a, the inset is the XRD pattern of ZIF-67, the diffractions of ZIF-67 match well with the simulated pattern (Wang et al 2018), demonstrats that the precursor synthesized are phase-pure. The diffraction peaks of the derivate at 2θ=51.88° and 60.62° indicating the formation of HCo-NC (Salunkhe et al 2015).…”

Section: Characterizationsupporting

confidence: 71%

ZIF-67 Derived Co Nanoparticles Embedded N-Doped Mesoporous Carbon Nanocages as an Active Heterogeneous Fenton Catalyst for the Degradation of Tetracycline

Wang

2021

Preprint

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Herein, the novel application of ZIF-67 derived HCo@NC as a highly active and stable catalyst for Fenton treatment of organic wastewater is discussed. The carbonization of the Cobalt based Zeolitic Imidazolate Framework-67 (ZIF-67) yielded of HCo@NC~700 nm shows a hollow structure inheriting the rhombic dodecahedron shape of the precusor ZIF-67. XPS analysis reveales the coexistence of Co2+ and Co0. The treatment of Tetracycline (TC) in HCo@NC catalyzed Fenton system indicates that hydroxyl radicals generated to oxidize TC to decompose, and the optimal condition is determined to be 0.71 mmol·L-1 H2O2 and 0.03 g·L-1 HCo@NC at pH 3 for the treatment of 15 mg·L-1 TC. H2O2 is catalyzed by HCo@NC to decompose to hydroxyl radicals for the degradation of TC, and the reaction mechanism is proposed.

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“…A typical example is the solvothermal reaction of ZIF‐67 nanocrystals in ethanol solution of Ni(NO 3 ) 2 , which results in hollow NiCo bimetallic layered double hydroxide (LDH) nanocages. [ 14 ] The compositions of the LDHs can be tuned by using different kinds of nitrates such as Co(NO 3 ) 2 [ 39 ] and Mg(NO 3 ) 2 . [ 40 ] In other cases, hydroxides or oxyhydroxides with different metal compositions were obtained by wet‐chemistry treatments of MOFs with different metal compositions with KOH [ 41 ] and (NH 4 ) 2 S 2 O 8 .…”

Section: Transformation From Mof‐based Precursors To Mof‐derived Materialsmentioning

confidence: 99%

Multi‐Scale Design of Metal–Organic Framework‐Derived Materials for Energy Electrocatalysis

Liang

Qiu

Gao

et al. 2021

Advanced Energy Materials

100

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The development of advanced energy conversion systems such as fuel cells and electrolyzers with desirable efficiency and durability is of great significance in order to power society in a sustainable way, which highly depends on the fabrication of electrocatalysts with desirable electrochemical performance. Multi‐scale design of electrocatalysts from the atomic scale to device‐scale is crucial to achieve optimal overall electrochemical performance in terms of activity, selectivity, and durability. Benefitting from their highly diverse and tunable structures and compositions, metal–organic frameworks (MOFs) are promising platforms to design and synthesize electrocatalysts at multiple scales for energy electrocatalysis. Herein, the fundamental principles and recent progress in multi‐scale design of MOF‐derived materials from the aspects of active sites, interfaces, pore structures, and morphologies are summarized. Moreover, precise control of these variables, to meet the requirements of specific energy‐related reactions including oxygen reduction reaction, oxygen evolution reaction, hydrogen evolution reaction, CO2 reduction reaction (CO2RR), and N2 reduction reaction is critically discussed. Furthermore, challenges and future research directions in multi‐scale design and fabrication of MOF‐derived electrocatalysts for real‐world energy conversion applications are provided.

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LDH Nanoflower Lantern Derived from ZIF-67 and Its Application for Adsorptive Removal of Organics from Water

Cited by 51 publications

References 32 publications

Hollow N‐ZIFs@NiCo‐LDH as highly efficient catalysts for 4‐nitrophenol and dyes

Hollow N‐ZIFs@NiCo‐LDH as highly efficient catalysts for 4‐nitrophenol and dyes

ZIF-67 Derived Co Nanoparticles Embedded N-Doped Mesoporous Carbon Nanocages as an Active Heterogeneous Fenton Catalyst for the Degradation of Tetracycline

Multi‐Scale Design of Metal–Organic Framework‐Derived Materials for Energy Electrocatalysis

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